Cheap Fireclay Brick For Sale in Rongsheng Kiln Refractory Manufacturer

Fire Clay Bricks For Sale

Fire Clay Bricks For Sale in RS Refractory Company, a kind of cheap refractory bricks, are manufactured with fire clay as the raw material and has virous properties of strong chemical erosion resistance and thermal conductivity resistance, which are mainly used in the secondary position of coke oven, such as regenerative chamber regenerative chamber, fire door lining brick, furnace top and ascension pipe lining brick.

 Cheap Fire Clay Bricks for Sale in Rongsheng Kiln Refractory Manufacture
Fire Clay Bricks for Sale

sales@refractoryonline.com
Get Free Quote

Description For Fire Clay Bricks For Sale

Fire Clay Bricks for Sale in Rongsheng Refractory are clay refractory product of aluminium silicate materials with 30%~40% content of Al2O3, which are made of 50% plastic clay and 50% hard clay chamotte according to certain grading requirement to be mixed and fired at the high temperature of 1300~1400℃ after molding and drying.

The refractoriness of fire clay brick is about the same with silica brick reaching up to 1690~1730℃ and its refractoriness under load is lower 200℃ than silica brick. Because there are also almost half low-melting-point amorphous glass phase except for high-refractory mullite crystal.

Composition Of Fire Clay Bricks For Sale

Fireclay bricks’ main mineral composition contains kaolinite (Al2O3, 2SiO2 and 2H2O) and 6%~7% impurities (K, Na, Ca, Ti and Fe oxide). Firing process of fire clay brick is kaolinite constantly dehydrate to be decomposed to mullite (3Al2O3·2SiO2) crystal. SiO2 and Al2O3 in the fireclay brick with impurities common form eutectic low-melting-point silicate surrounding the mullite crystal in the firing process.

 Cheap Fire Clay Refractory Brick For Sale in Rongsheng Kiln Refractory Manufacture
Fire Clay Refractory Brick

sales@refractoryonline.com
Get Free Quote

Technical Index Of Fire Clay Bricks For Sale

Physicochemical Indexes

Item Unit

Idex

N-1 N-2a N-2b N-3a N-3b N-4 N-5 N-6
Refractoriness                             ≥ 1750 1730 1710 1710 1710 1690 1670 1580
0.2Mpa Initial refractoriness under load             ≥ 1400 1350 1320 1300
Reheating linear change 1400℃, 2h % +0.1

-0.4

+0.1

-0.50

+0.2

-0.50

1350℃, 2h % +0.2

-0.5

+0.2

-0.5

+0.2

-0.5

+0.2

-0.5

Apparent porosity  ≤ % 22 24 26 24 26 24 26 28
Cold crushing strength                      ≥ Mpa 300 250 200 200 150 200 150 150
Thermal shock resistance Times N-2b and N-3b shall be inspected by the item and list the real-time date on the Quality Certificate.

Execute Standard: GB4415-84

Index Unit Brand & Value
(NZ)-42 (NZ)-40 (NZ)-38
Al2O3                                   ≥ % 42 40 38
Refractoriness                             ≥ 1750 1730 1690
2Kg/cm2 Initial refractoriness under load       ≥ 1400 1350 1300
Reheating linear shrinkage  (1450℃,2hours)   ≤ % +0.5 0.3
Reheating linear shrinkage  (1350℃,2hours)   ≤ % 24 -0.5
Apparent porosity % 22 200 26
Cold crushing strength                      ≥ Kgfcm2 250 150

Bulk Density and Thermal Conductivity

Relation between the change of fire clay refractory brick bulk density and Thermal conductivity
Item Index
Bulk density/g·cm-1 0.8 1.95 2.2
Thermal conductivity/W·(m·k)-1 0.58 1.05 1.28
KJ·(m·h·℃)-1 2.09 3.76 4.60
Cheap Fireclay Bricks For Sale in Rongsheng Kiln Refractory Manufacture
Fireclay Bricks

sales@refractoryonline.com
Get Free Quote

Prosperities of Fire Clay Bricks For Sale

Fireclay brick is faintly acid refractory product that can resist erosion from acid slag and acid gas. Fire clay refractory brick has good thermal properties and can resist thermal shock.

  • Dense structure, good high temperature compressive strength.
  • Resistance to erosion and thermal conductivity.
  • Stability performance.

Application of Fire Clay Bricks For Sale

Fire Clay Bricks for Sale are used for cement rotary kiln, steel-smelting furnace, iron-fining furnace and foundry furnace.

As the refractoriness under load of clay bricks is low, shrink at the high temperature, thermal conductivity is lower 15%~20% than silica bricks and mechanical strength is more badly than silica brick. Fireclay brick is only used in the secondary position of coke oven, such as regenerative chamber regenerative chamber, fire door lining brick, furnace top and ascension pipe lining brick.

Manufacturing Process Of Fire Clay Bricks For Sale

During the range of 0~1000℃, the volume of fireclay brick is expand uniformly with the temperature rising. Linear expansion curve is similar to a strip of straight line, linear expansivity is 0.6%~0.7% that only account for about one half of silica brick. When the temperature rise constantly after reaching to 1200℃, fireclay brick’s bulk start to shrink from the great expansion value. When the temperature is over 1200℃, the low-melting temperature phase in the fireclay brick will fuse gradually. As the particle get tighten affected by surface tension, which result the bulk shrink.

Fire Clay Bricks For Sale Supplier

Buy Fire Clay Bricks for Sale from Rongsheng Refractory, which is a professional fireclay brick supplier and insists on fireclay brick production for more than 20 years. We can provide all kinds of fire clay brick sizes you need and also customize fireclay brick tile according to your special requirement.

Leave Your Requirement on RS Refractory Materials and Firebricks! We Will Reply You In 12 Hours!: